assume cs:codesg

codesg segment
start: mov al,08h
       out 42h,al
       out 42h,;initializing ascii array with every possible combenation of ?? 0-F
       in al,61h
       mov ah,al
       or al,3
       out 61h,al
       mov cx,60000

delay:
       nop
       loop delay
       
       
       mov al,ah
       out 61h,al

      mov ax,4c00h
      int 21h

codesg ends
end start 

